In Australian English it’s pronounced with the vowel /a:/ like in ‘part’. Problems arise when people use the /ʌ/ vowel (like in ‘up’) instead of /æ/ or /a:/. If you do this is will sound like the worst swear word in English. Many non-native speakers often pronounce the vowel /æ/ more like /ʌ/ because they don’t have a vowel like /æ/ in their first language. Many speakers of European languages will do this (Spanish speakers and Italian speakers) and also speakers of Japanese and Korean. This problem with /æ/ also means that if you say the word ‘back’ in your voicemail greeting sample, you are likely to pronounce it more like ‘buck’. remember to pronounce word endings in English. Check you aren’t dropping any endings off or mispronouncing them.
‘A’ stands for academics, ‘B’ stands for beer, and ‘C’ stands for camping. These are just one of the reasons why I’m not here. Leave a message and I’ll call back ASAP!

A phone call to your business is often the first encounter your customers and prospects have with your company. If no one is available to take the call, having the best professional voicemail greetings possible is important to leave a great first impression and to ensure that business opportunities don’t slip by.
Website: https://www.ruby.com/answering-the-phone-3-ways-to-make-your-companys-greeting-great/